Fixed length shaping matrix let-off motion
阅读说明:本技术 一种定长成型矩阵式送经装置 (Fixed length shaping matrix let-off motion ) 是由 杨继毓 瞿书涯 潘梁 阮见 赵敬 李小欢 王群 王浩 于 2019-10-29 设计创作,主要内容包括:本发明公开了一种定长成型矩阵式送经装置,其包括机架、移动架、驱动装置和若干齿板,在该机架上设置有导轨,该移动架活动地安装在该导轨上;该驱动装置安装在机架上、并用于驱动移动架沿该导轨移动;在该移动架上安装有两个弧形槽座,该两个弧形槽座均沿竖直方向延伸、并沿水平方向间隔设置;齿板的两端卡持在两个弧形槽座上,每一齿板均具有一个第一轴线,齿板能够绕第一轴线转动;在齿板上设置有齿槽;该驱动装置经压力传感器连接移动架,该压力传感器用于测量驱动装置与移动架之间的压力。本发明使张力线在齿板两侧的长度发生变化,从而改变齿板两侧的张力线所产生的张力并趋向于平衡,使得张力线两端所连接的两股经纱的张力趋向于平衡。(The invention discloses a fixed-length forming matrix type let-off device which comprises a rack, a movable frame, a driving device and a plurality of toothed plates, wherein the rack is provided with a guide rail, and the movable frame is movably arranged on the guide rail; the driving device is arranged on the frame and is used for driving the moving frame to move along the guide rail; two arc-shaped groove seats are arranged on the movable frame, extend along the vertical direction and are arranged at intervals along the horizontal direction; two ends of the toothed plate are clamped on the two arc-shaped groove seats, each toothed plate is provided with a first axis, and the toothed plate can rotate around the first axis; a tooth groove is arranged on the toothed plate; the driving device is connected with the movable frame through a pressure sensor, and the pressure sensor is used for measuring the pressure between the driving device and the movable frame. The invention changes the lengths of the tension lines at the two sides of the toothed plate, thereby changing the tension generated by the tension lines at the two sides of the toothed plate and tending to balance, and ensuring that the tensions of two warp yarns connected at the two ends of the tension lines tend to balance.)
1. A fixed-length forming matrix let-off device is characterized by comprising a rack, a movable frame, a driving device and a plurality of toothed plates, wherein the rack is provided with a guide rail, and the movable frame is movably arranged on the guide rail; the driving device is arranged on the frame and is used for driving the moving frame to move along the guide rail;
two arc-shaped groove seats are arranged on the movable frame, extend along the vertical direction and are arranged at intervals along the horizontal direction; two ends of each toothed plate are respectively and rotatably clamped on the two arc-shaped groove seats, each toothed plate is provided with a first axis extending along the horizontal direction, and the toothed plates can rotate around the corresponding first axes; a tooth groove is arranged on the toothed plate;
the driving device is connected with the movable frame through a pressure sensor, and the pressure sensor is used for measuring the pressure between the driving device and the movable frame.
2. Let-off device according to claim 1,
the movable frame comprises a vertically arranged rectangular frame, four guide rails are respectively arranged corresponding to four top corners of the rectangular frame, the four top corners of the rectangular frame are slidably supported on the corresponding guide rails, and two arc-shaped groove seats are arranged on the rectangular frame; the tension line can bypass the toothed plate through the hollow area of the rectangular frame and be clamped in the toothed groove.
3. A let-off device according to claim 2, wherein a drive device is provided for each guide rail, each drive device comprising a motor mounted on the frame, a lead screw mounted on an output shaft of the motor, the lead screw being rotatably supported on the frame, a drive nut being engaged on the lead screw, the drive nut being mounted on the moving frame via the pressure sensor.
4. The let-off device according to claim 1, wherein each arc-shaped groove seat comprises a body in the shape of an elongated plate, one side of the body in the width direction is provided with an installation part, the other side of the body in the width direction is provided with a plurality of clamping grooves, and the clamping grooves are uniformly arranged along the length direction of the body; the bottoms of the clamping grooves are positioned on an arc line, and the middle parts of the arc line protrude towards the direction departing from the mounting part along the width direction of the body; two ends of the toothed plate are respectively and rotatably inserted into the clamping grooves of the arc-shaped groove seats.
5. Let-off device according to claim 4, characterized in that the curved line has a single radius or a plurality of radii.
6. Let-off device according to claim 4, characterized in that the curved line has a single radius and is centered on the centre of the fabric to be woven.
7. The let-off device according to claim 6, wherein the arcuate line is symmetrical with respect to a virtual plane perpendicular to a longitudinal direction of the body, and the catching groove is symmetrically disposed with respect to the virtual plane.
8. A let-off device according to claim 1, wherein the toothed plate comprises a rod extending along the corresponding first axis, and a first plate and a second plate are provided on the rod, the first plate and the second plate both extending along the length direction of the rod and both extending in the same direction perpendicular to the length direction of the rod; two ends of the rod piece extend outwards beyond the first plate and the second plate to form connecting parts respectively, and the connecting parts are rotatably inserted into the arc-shaped groove seats;
a plurality of tooth grooves are formed in the first plate.
9. Let-off device according to claim 8, characterized in that on either toothed plate the second plate has a distal end face remote from the lever and parallel to the first axis, which is closer to the lever than the slot bottom face of the toothed slot.
10. Let-off device according to claim 1, characterized in that the drive is a ball screw mechanism, a chain drive, a rack and pinion drive or a toothed belt drive;
the power mechanism for driving the driving device is a hydraulic device, a pneumatic device or an electric device.
Technical Field
The invention relates to a fixed-length forming matrix type let-off device, and belongs to the technical field of textile machinery.
Background
When the aerospace products are developed in new models, most of the aerospace products are trial-made and developed products, and the aerospace products are various in varieties and small in quantity. If continuous warp feeding is still adopted, warp waste is easily caused, the raw material cost of products is increased, and the yarns are long in path from warp beams to cloth fells, pass through more accessories and easily cause yarn abrasion. Meanwhile, the preparation time in the early stage of continuous warp feeding is long, the flexibility of preparation of various products in small batches is difficult to meet, the yarns are seriously overlapped, and the improvement of the weaving efficiency is greatly limited.
Aiming at various and small-batch products, a fixed-length forming mode is adopted, namely a tension line and a pagoda line are combined, the pagoda line penetrates through a heddle eye to draw out warp yarns with a certain length, the length of the warp yarns is designed according to the product requirements, the warp feeding mode can reduce the friction between the warp yarns and accessories, and meanwhile, the fixed-length yarn tying mode is adopted, so that the waste of raw materials can be avoided. In the existing fixed-length forming mode, due to the limitation of a warp yarn arrangement device, a certain included angle is formed between the uppermost layer and the lowermost layer of a tension line, and the problems of uneven warp yarn tension, unclear opening, easy yarn damage and the like exist.
Disclosure of Invention
In order to solve the problems, the invention provides a let-off device, which at least partially solves the problems caused by the limitation of a warp yarn arrangement device and the fact that a certain included angle is formed between the uppermost layer and the lowermost layer of a tension line, and the specific technical scheme is as follows:
a fixed-length forming matrix let-off device comprises a rack, a movable frame, a driving device and a plurality of toothed plates, wherein a guide rail is arranged on the rack, and the movable frame is movably arranged on the guide rail; the driving device is arranged on the frame and is used for driving the moving frame to move along the guide rail;
two arc-shaped groove seats are arranged on the movable frame, extend along the vertical direction and are arranged at intervals along the horizontal direction; two ends of each toothed plate are respectively and rotatably clamped on the two arc-shaped groove seats, each toothed plate is provided with a first axis extending along the horizontal direction, and the toothed plates can rotate around the corresponding first axes; a tooth groove is arranged on the toothed plate;
the driving device is connected with the movable frame through a pressure sensor, and the pressure sensor is used for measuring the pressure between the driving device and the movable frame. The pressure sensor is preferably a piezoelectric force sensor.
According to the invention, the matrix let-off device is designed according to the technological characteristics of fixed-length forming of the three-dimensional woven fabric, the structure of the traditional let-off device is changed, the key problems of warp tension consistency control, low fiber damage control and the like are solved, and the weaving efficiency and the stability of the fabric quality are improved. According to the invention, the toothed plates capable of rotating are arranged, the toothed plates are clamped on the two arc-shaped groove seats, and the tooth grooves on the toothed plates can be arranged in a matrix form due to the horizontal arrangement of the first axis of the toothed plates.
When the let-off device works, the two ends of the tension line, which bypass the toothed plate, can be respectively connected with one strand of warp yarn through one cone thread, when the tension borne by the two strands of warp yarns is unbalanced, the toothed plate can be driven to rotate around the first axis of the toothed plate, so that the lengths of the tension line on the two sides of the toothed plate are changed, the tension generated by the tension line on the two sides of the toothed plate is changed, the tension line tends to be balanced, and the tension of the two strands of warp yarns connected with the two ends of the tension line tends to be balanced. The tension on the warp tends to be balanced, so that the problem that the strength of part of the warp is lowered due to the fact that part of the warp is broken due to the fact that the tension is too large is avoided.
Specifically, the movable frame comprises a vertically arranged rectangular frame, four guide rails are respectively arranged corresponding to four top corners of the rectangular frame, the four top corners of the rectangular frame are slidably supported on the corresponding guide rails, and two arc-shaped groove seats are arranged on the rectangular frame; the tension line can bypass the toothed plate through the hollow area of the rectangular frame and be clamped in the toothed groove. By adopting the structure, the plurality of toothed plates on the movable frame can be just opposite to the middle area of the rectangular frame, so that a more convenient operation space is provided, and meanwhile, the tension line can be prevented from being rubbed with other parts of the equipment, so that the tension of the tension line is adversely affected.
Further, a driving device is provided corresponding to each guide rail, each driving device includes a motor mounted on the frame, a lead screw is mounted on an output shaft of the motor, the lead screw is rotatably supported on the frame, a driving nut is engaged on the lead screw, and the driving nut is mounted on the moving frame via the pressure sensor.
Set up a drive arrangement corresponding to every guide rail, can carry out synchronous removal operation to four apex angles of rectangle frame, make the rectangle frame move the in-process steadily, keep arc groove seat and the pinion rack on the rectangle frame to remove along the direction of setting for, make the tension that the tension line receives on the pinion rack remain stable simultaneously.
Furthermore, each arc-shaped groove seat comprises a strip-shaped plate-shaped body, an installation part is arranged on one side of the body in the width direction, a plurality of clamping grooves are formed in the other side of the body in the width direction, and the clamping grooves are uniformly formed in the length direction of the body; the bottoms of the clamping grooves are positioned on an arc line, and the middle parts of the arc line protrude towards the direction departing from the mounting part along the width direction of the body; two ends of the toothed plate are respectively and rotatably inserted into the clamping grooves of the arc-shaped groove seats. In particular, the arc-shaped line has a single radius or multiple radii, according to different needs.
After the groove bottom of the clamping groove on the arc-shaped groove seat is arranged along an arc-shaped line, the stretching directions of the tension lines tend to be consistent after the tension lines are stretched by yarns, and the tensions generated by the tension lines tend to be consistent, so that the tensions suffered by the yarns tend to be consistent, and the consistency of the performances of all areas of the weaving sample is facilitated.
Specifically, the arc line has a single radius, and the arc line is centered at the center of the fabric to be woven. When the let-off device in this application is utilized to weave fabrics, the fabrics are not wound, and in the weaving process, the fabrics are always in a tensioning state, the center of the fabrics to be woven is taken as the circle center, and the included angle between a tension line and the horizontal plane can be in a smaller fluctuation range in the weaving process, so that the fluctuation range of the tension line is reduced, the weaving process is kept, the tension received by the warp yarn is kept stable, and the weaving process is favorably and smoothly carried out.
Preferably, the arc line is symmetrical with respect to a virtual plane perpendicular to the length direction of the body, and the slot is symmetrically disposed with respect to the virtual plane. The design can ensure that the fabric is positioned in the virtual plane, especially when the central plane of the fabric in the thickness direction is positioned in the virtual plane, the warp threads can radially extend towards the warp feeding device by a central point, and the tension of each warp thread tends to be consistent to the maximum extent.
Specifically, the toothed plate comprises a rod piece extending along a corresponding first axis, a first plate and a second plate are arranged on the rod piece, and both the first plate and the second plate extend along the length direction of the rod piece and extend towards the same direction along the length direction perpendicular to the rod piece; two ends of the rod piece extend outwards beyond the first plate and the second plate to form connecting parts respectively, and the connecting parts are rotatably inserted into the arc-shaped groove seats; a plurality of tooth grooves are formed in the first plate.
When production, the tension line can bypass the pinion rack and block in the tooth's socket, for current design, this pinion rack has add a second board, utilizes the second board can increase the flare angle of tension line when bypassing the pinion rack effectively, reduces the frictional force between tension line and the tooth's socket, is favorable to the tension line to slide on the pinion rack, makes the both ends atress of tension line reach the balance.
Preferably, on either tooth plate, the second plate has a distal end face facing away from the lever and parallel to the first axis, the distal end face being closer to the lever than the slot bottom face of the tooth slot. This design can make the tension line when walking around the pinion rack, can block in the tooth's socket comparatively smoothly, makes easy and simple to handle. Meanwhile, the second plate can support the tension line, and the opening angle of the tension line when the tension line bypasses the toothed plate is enlarged.
Further, the driving device is a ball screw mechanism, a chain transmission mechanism, a gear rack transmission mechanism or a toothed belt transmission mechanism; the power mechanism for driving the driving device is a hydraulic device, a pneumatic device or an electric device.
The warp let-off device can be assembled by selecting the driving device or the power mechanism according to different requirements.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of the structure of the arc-shaped groove seat.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Figure 4 is a schematic view of the toothed plate construction.
Fig. 5 is an enlarged view of a portion B in fig. 4.
Figure 6 is a schematic view of a tension line on a tooth plate.
Fig. 7 is a schematic view of the embodiment of fig. 1 in operation.
Detailed Description
Referring to fig. 1, in this fig. 1, the direction of arrow X indicates the width direction of the device, which corresponds to the warp direction of the fabric, arrow Y indicates the length direction of the device, which corresponds to the weft direction of the fabric, the direction of arrow N is directed in the direction of pulling of the warp yarns, the side of the device facing the direction of pulling of the warp yarns is referred to as the woven side, and the side opposite to the woven side is referred to as the nonwoven side, i.e. the direction of arrow M is directed as the nonwoven side.
The utility model provides a fixed length shaping matrix let-off
A guide rail and a driving device are respectively arranged on the two
The guide rail and the
The
The
In order to allow the
It will be appreciated that in other embodiments, the guide rail may be made of a profile steel having an elongated slot, and a sliding block is formed on the sliding plate, and is retained in the elongated slot and can slide along the elongated slot.
In this embodiment, the rest of the guide rails and the driving device have the same structure, and are not described again. Namely, four corners of the rectangular frame are slidably supported on four guide rails.
A
The structures of the
Because the driving nut is connected to the supporting
The two arc-shaped groove seats 80 are arranged at intervals on two sides of the rectangular frame in the length direction Y. Referring to fig. 2 and 3, each arc-shaped
A plurality of clamping
Specifically, in the present embodiment, the
It is understood that the
The two arc-shaped groove seats 80 are arranged on one side of the
Referring to fig. 4 and 5, the
After the both ends of pinion rack are inserted in the draw-in groove of arc groove seat, the pinion rack all can rotate around
The
Referring to fig. 6 and 7, in the operation of the present application, the
In the weaving process, the first end 610 and the second end 620 of the
In the present embodiment, only a specific structure of the driving device is described, it is understood that in other embodiments, the driving device may be manufactured by using a mature prior art, for example, the driving device may be manufactured by using a ball screw mechanism, a chain transmission mechanism, a rack and pinion transmission mechanism or a toothed belt transmission mechanism, and for the power mechanism of the driving device, a hydraulic device, a pneumatic device or an electric device may be selected according to specific requirements.
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